Question

the image shows groundwater zones.
which is the saturated zone?
1
porous rock/soil
2
3
water
4
impermeable rock
options: 1, 2, 3, 4

Explanation:

The saturated zone is the layer where all the pores in rock/soil are fully filled with water. In the diagram, zone 3 is the fully water-saturated porous layer below the water table (zone 2, which is the top of the saturated zone), resting on impermeable rock (zone 4), and above the unsaturated porous rock/soil (zone 1).

Answer:

3